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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3178) Make Closing Behavior of Window Operators Configurable
Date Mon, 25 Jan 2016 15:42:39 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15115418#comment-15115418

ASF GitHub Bot commented on FLINK-3178:

Github user StephanEwen commented on the pull request:

    Looks good, with one inline question.

> Make Closing Behavior of Window Operators Configurable
> ------------------------------------------------------
>                 Key: FLINK-3178
>                 URL: https://issues.apache.org/jira/browse/FLINK-3178
>             Project: Flink
>          Issue Type: Improvement
>          Components: Streaming
>    Affects Versions: 1.0.0
>            Reporter: Aljoscha Krettek
>            Assignee: Aljoscha Krettek
>            Priority: Blocker
> Right now, all window operators emit (incomplete) in-flight windows when they are closing
down. This happens for two reasons:
> 1. sources emit a final Long.MAX_VALUE watermark to flush out windows when they close.
> 2. window operators emit in-flight windows in their close() method
> For some users this might not be the desired behavior so we should either change it or
make it configurable.

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